diff --git a/gtk-doc.spec b/gtk-doc.spec
index 1af34b5..0beb495 100644
--- a/gtk-doc.spec
+++ b/gtk-doc.spec
@@ -10,7 +10,7 @@ URL:            https://www.gtk.org/gtk-doc/
 Source0:        https://download.gnome.org/sources/gtk-doc/1.33/%{name}-%{version}.tar.xz
 
 BuildRequires:  python3-devel docbook-utils libxslt gettext
-BuildRequires:  yelp-tools docbook-style-xsl gcc gdb
+BuildRequires:  itstool yelp-tools docbook-style-xsl gcc gdb
 BuildRequires:  dblatex meson glib2-devel
 BuildRequires:  python3-pygments
 BuildRequires:  python3-parameterized